Cylinder-harrow.



R. M. BOYER.

CYLINDER HARHOW.

APPucATloN FILED xuLv 31.1916.

1,246,388. Patented Nov. 13, 1917.

umani) 4sfrafrns PATENT onirica.

RICHARD M. BOYER, OF OSKALOOSA, IOWA, ASSIGNOR OF ONE-HALF TO CHARLES 'HOOVER 0F OSKALOOSA, IOWA.

CYLINDER-HARROW.

Specification of Letters Patent. )iajte1`1t(5@l NOV, 13,V 1917,

Application filed .T uly V31., 1916. Serial No. 112,422.

To all whom z'z may concern:

Be it known that I, RICHARD M. BOYER, a citizen of the United States, and resident of Oskaloosa, in the county 'of Y Mahaska and Statev of Iowa, have invented a new and useful Cylinder-Harrow, of which the following is a specification..V Y

The object of my invention is to provide a cylinder harrow of simple, durable and inexpensive construction.

A further obj ect isto provide a harrow of the general type mentioned having a frame and a rotary supporting member and asupporting wheel or wheels and having. a toothed cylinder adjustably supported on said frame and geared to said rotary supporting member.

A. further object is to provide in said machine a cylinder geared to rotate in the opposite direction from the rotary supporting member when the machine is travelingcver the ground.

Still a further object is to provide in said machine, a cylinder having teeth capable of adjustment to different angles withrela- ,tion to the ground over which the machine travels.

Figure 1 shows a side elevation of a cylinder harrow embodying my invention.

Fig. 2 shows a top or plan view of the same.

Fig. 3 shows la vertical, sectional view taken on the line 3-3 of Fig. 2, and

Fig. 4 shows an end elevation of the rotary digging cylinder, parts being broken awa Iiif the exemplification of my invention,

vshown in the accompanying drawings, I

have used the reference numeral 10 to indicate the frame of my improved cylinder harrow. Extendingtransversely across the machine beneath the forward portion of the frame 10 is a shaft 11. rlihe vends ofthe shaft 11 are supported in longitudinally arranged frame members 12 which extend forwardlyl from the shaft 11 and are connected at their forward ends by a transverse frame member 13. Upright frame members 14 connect the frame members 12 with the frame. Supported on the forward part of the frame 10 and on the lmember 13 is a rotatable shaft 15. .Fixed on the shaft 15 between the members 13 and 10, is a tongue 16. i

Rotatably supported at the central rear portion of the machine, is an upright shaft 17 carrying'at its lower end rearwardly and downwardly extending spaced arms 18 between which is mounted a caster wheel 19.

The shaft. 17 is adapted to rotate in its bearing 20 on the frame 10. Mounted on the upper ends of the shafts 15 andlr' are sprocket wheels 21 and 22. Extended around the forward portion of the wheel 21 and the rearward. portion of the wheel 22, are' chains 23 and 241,. The ends of the chain 23 are connected with the ends of the chain 24e by means,l of aflexible device 26 which is crossed between the sprocket wheels 21 and 22, sothat rotation of `one .of "said sprocket wheels'ini one `direction will impart rotation to the other sprocket wheel in the Y other direction. Thus when lthe tongue 16 v1s moved laterally in turning. the machine, .the shaft 15 will .be rotated, thereby imparting rotationto 1,the lsprocket wheels 21 and 22 so that the casterwheelY 19 is turned in the opposite direction to that of the, movements of Vthe tongue` 16.

Mounted onthe shaft 11, .is a rotarysup- Sporting device which `as shownis made in three sections.

Each section comprises a pair of rims 27 spaced from each other and connected by a pluralityof'parallel spaced,

transverse members 28. The members 28 are provided with radially outwardly eX- Vtending' teeth 29. Extending `radially inwardly from the rims 27 are spokes 30 which are connected at their inner ends by a common web 31, which serves as a bearing for theshaft 11. Fixed on the shaft 11 and adjacent to each section of the rotary supporting device is a ratchet wheel 32.

Pivotally mounted, for instance .on one of the spokes 30 of each of said sections, is

ya pawl 33 which is yieldingly heldin 'engagenient with the teeth of the adjacent sprocket wheel 32 by means of the spring 34. Pivoted to the shaft 1l near each end thereof, is a rearwardly extending frame member 35.

Rotatably mounted in the rear ends of the frame members 35 is a transverse shaft 30.

@n one end of shaft 30 is a pinion 3l. Mounted in one of the frame members 35 is a stub shaft 36 on which is a pinion 37 in mesh with the pinion 31. On the stub shaft 36 is a sprocket gear 32 in ,line with the sprocket gear 33 on the shaft l1. A chain 34 travels on the sprockets 32 and 33. Near each end of shaft 30 is a wheel having the rim 35 and spokes 38 which lare iixe'l with relation to shaft 30.

lotatably mounted on the frame 10 is a rock shaft 39 preferably slightly rearwardly fr om the shaft 30. Secured to the rock shaft 39 near its ends are downwardly and forwardly extending parallel arms 40 and pivoted to the forward ends 'of the arms 40, are downwardly extending links 4l in the lower ends of which the Vshaft 30 is journaled. Secured to theY roek shaft 39 is a lever having an ordinary spring actuated pawl mechanically arranged to co-.act with a sector' 44 on a frame of the machine.

Suitably mounted on the fra-me near the rear portion thereof, is a seat 45.

The rims 35 are connected by transverse frame members 46. Located near each rim 35 is a ring 47 of smaller diameter than the rim 35 and preferably mounted in brace members 48 in which the rings 47 may rotate.

i. The transverse members 46 are preferably in the form of rods or shafts having their ends rotatablyinounted in rims^35. Centrally fixed on the rods 46 are a plurality of teeth 49 having pointed outer ends and having their inner ends pivoted to the links 50. The links 50 are pivoted to the rings 47, as illustrated in Fig. 4.

Fixed on the members 46 between the rims 35 are other teeth 5l similar to the teeth 49, except that they do not have the portions extending inwardly past the rim, which inthe case of the teeth 49 serve for adjustment of the links 50.

Pivoted to the rims 35 are levers 52 having ordinary spring actuated pawl mechanisms 53 adapted to eoact with a sector 54 on each rim 35.

Pivoted to each of the levers 5.2 is a link 55. The links 55 are also pivoted to the respective rings 47. It will be seen that adjustment of the levers 52 will result in imparting limited rotary movement to the rings 47 whereby the teeth 49 will be moved for impartingrsome rotation to the members 46, thereby varying the positions of the teeth 49 and 50 and determining the angles at which said teeth will strike the ground.

I preferably connect a drag 56-to the frame of my machine so that it travels over the ground which has been stirred by the other mechanism. Y

In the practical use Vof my improved cylinder harrow, the machine is drawn over the ground by any suitable motive power.

By manipulation of the lever 42, the shaft 30 may be raised or lowered, thereby raising or lowering the digging and cultivating teeth.

The cylinder eult-ivator is so geared that it travels in a direction opposite that of the travel of the rotary supporting member at the front of the machine.

The teeth on the front rotary supporting member loosen'the dirt, so that when the rotary cylinder travels over it, the dirt will be thoroughly stirred and cultivated.

rhe depth of the out of the teeth maybe regulated by means of the lever 42,v and the depth and character of the action of the teeth by means of the leis adj ustably supported on the frame, so that its weight is carried on the frame.

The drag 56 is designed for smoothing and packing a road orV for'smoothing the surface of afield and for making a dust mulch.

The main weight of the machine is supported upon the supporting rotary members and not on the cylinder harrow.

Some changes may be made in the construction and arrangement of the parts 'of my improved cylindrical harrow without departing from the essential features andpurposes thereof, and it is my intention to cover by this application any such changes which may be .included within the scope of my claims.

I claim as my invention: f A

l. In a harrow, a frame, a shaft journaled therein, a pair of spacedl disks of the'same size journaled thereon, a plurality of parallel spaced Irods pivoted at each end in one of the disks adjacent to the periphery of the latter, a vpluralit-y of outwardly extending teethmeunted on each rod, a ring of smaller diameter than the disks, said ring being rotatably and coneentrieally mounted relative to such disks, a lug ext-ending inwardly from each of said -rods to a point adjacent to the periphery of said ring, a plurality of links pivoted at one end to one lof 'the lugs, and at the other end to the rings, and means for selectively fixing the ring from rotation relative to the disks in any one of-severalpredetermined positions.

2. In a harrow, a frame, a. shaft journaled therein, a pair of spaced disks of the same size journaled thereon, a pluralityof parallel spaced rods pivoted at each end in one of the disks adjacent to the periphery of the latter, a plurality of outwardly extending teeth mounted on each rod, a ring of smaller ed in liked relation to the shaft, a lever pivdiameter than the disks, said ring being rooted to said bracket, means for operatively l0 tatably and ooncentrically mounted relative connecting said lever with the ring and to such disks, a lug extending inwardly from means for locking said lever in a plurality i' each of said rods to a point adjacent to the of predetermined positions.

periphery of said ring, a plurality of links Des Moines, Iowa, June 27, 1916. pivoted at one end to one of the lugs, and at the other end to the rings, a bracket mount- RICHARD M. BOYER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

